WMO Secretary-General Celeste Saulo said the developing El Nino could worsen droughts, trigger heavier rainfall in some regions, and increase the frequency and intensity of heatwaves on land and at sea.
Forecasts for June through August point to above-average temperatures across most parts of the world, raising concerns about heat stress, water shortages, crop losses and economic disruption.
The agency said El Nino typically brings wetter conditions to parts of South America, the southern United States, the Horn of Africa and Central Asia, while increasing the likelihood of drought in regions including Australia, Indonesia, Central America and parts of southern Asia.
Officials stressed that early warning systems and seasonal forecasts will be critical in helping governments prepare for potential impacts and reduce risks to lives and livelihoods.
The last El Nino event in 2023–24 was among the five strongest ever recorded and contributed to record global temperatures in 2024.
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